Summit Midstream Corp (SMC) director files initial insider Form 3

Rhea-AI Filing Summary

Summit Midstream Corp director Carolyn J. Stone filed an initial Form 3, which reports her status as a director but shows no buy, sell, or other reportable transactions in the company’s securities. This filing establishes her baseline insider reporting obligations going forward.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Stone Carolyn J

(Last) (First) (Middle)

C/O SUMMIT MIDSTREAM CORPORATION

910 LOUISIANA STREET, SUITE 4200

(Street)

HOUSTON TEXAS 77002

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/16/2026

3. Issuer Name and Ticker or Trading Symbol
Summit Midstream Corp [ SMC ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

No securities are beneficially owned.

	/s/ James D. Johnston, Attorney-in-Fact for Carolyn J. Stone	03/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does Carolyn J. Stone’s Form 3 mean for Summit Midstream Corp (SMC)?

The Form 3 shows Carolyn J. Stone as a director of Summit Midstream Corp. It records her as an insider for SEC purposes and starts her ongoing duty to report future transactions in the company’s securities on Forms 4 or 5.

Does the Summit Midstream Corp (SMC) Form 3 show any stock purchases or sales?

No, this Form 3 reports no buy, sell, or other transactions. All transaction counts and share amounts in the summary are zero, indicating that the filing only establishes insider status rather than disclosing trading activity.

Who is the reporting person on this Summit Midstream Corp (SMC) Form 3?

The reporting person is Carolyn J. Stone, identified as a director of Summit Midstream Corp. The filing confirms her role but does not list any transactions or derivative positions in the company’s securities in the provided data.

Does this Summit Midstream Corp (SMC) Form 3 include derivative securities information?

No derivative positions are listed; the derivativeSummary is empty. This means the provided data does not show any options, warrants, or other derivative securities reported for Carolyn J. Stone in this initial ownership statement.

What transaction activity is summarized in this Summit Midstream Corp (SMC) Form 3?

The transaction summary shows zero counts and zero shares for buys, sells, exercises, gifts, tax withholding, and restructurings. It also notes a neutral net buy/sell direction, confirming there is no reported trading activity in this filing.